连铸板坯和方坯表面缺陷的分析与判定

无论是钢板、板卷,还是棒材或型材,它们的表面缺陷主要有两种基本来源:轧制过程产生或起始于板坯/方坯来料。通常,裂纹等各种各样的缺陷大多源于初始铸坯,而非产生于后面的工序。不管是方坯还是板坯,各种缺陷的产生机理是类似的。描述板坯/方坯上存在的各种缺陷,并举例不同工艺条件下这些缺陷的表现形式。此外,还提出判定各种缺陷的一些指导准则。

Identification and investigation of continuous cast slab and billet defects

Surface defects on plate,coil,bar and structural shapes have two principal sources of origin.They are either rolled in the processing into the shape or they come from the starting slab or billet feedstock.In general,the majority of the tears,seams,etc.type of defects come from the starting slab or billet feedstock and is not from the subsequent downstream processing.Regardless if the metal is cast as a slab or billet the metallurgy that creates the various defects is similar.This paper will describe the typ...